MR365的香味遗传及在杂交稻育种中的利用

以MR365及其作香味供体育成的香稻不育系湘香2号A、新香A、湘香2号S与V20B、V41B、珍汕97B、明恢63等非香亲本杂交,采用KOH溶液法测定杂交组合F1、F2、B1F1植株和F2米粒的香味表现,结果表明,MR365的香味遗传受1对隐性核基因控制.在杂交水稻育种中,利用MR365育成了几个香稻不育系,并选配出一批香型杂交稻组合,其中香优63、新香优77、新香优80等高产优质组合已通过省级审(认)定,具有较好的应用前景.

Inheritance of Aroma of MR365 and Its Use in Hybrid Rice Breeding

The inheritance of aroma of MR365 was studied by crossing MR365 and its derivative aromatc male sterile lines Xiangxiang 2 A, Xingxiang A and Xiangxiang 2 S to non-aromatic lines V20B, V41B, Zhenshan 97B, Minghui 63, etc. Based on the performance of aroma tested by KOH solution method in plants of the generations of F 1, F 2, B 1F 1 and in kernels of F 2 generation, the aroma was controlled by a pair of recessive nuclear genes. In hybrid rice breeding, several aromatic MS lines have been developed from MR365, and a group of hybrid combinations mated with these aromatic MS lines show both high yielding ability and good grain quality with aroma, among which Xiangyou 63, Xingxiangyou 77 and Xingxiangyou 80 have been registered and released to commercial production, and show a very good prospect.